1429121 has 4 divisors (see below), whose sum is σ = 1448772. Its totient is φ = 1409472.

The previous prime is 1429117. The next prime is 1429133. The reversal of 1429121 is 1219241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1132096 + 297025 = 1064^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1429121 - 2² = 1429117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1429093 and 1429102.

It is not an unprimeable number, because it can be changed into a prime (1429721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9716 + ... + 9861.

It is an arithmetic number, because the mean of its divisors is an integer number (362193).

2^1429121 is an apocalyptic number.

It is an amenable number.

1429121 is a deficient number, since it is larger than the sum of its proper divisors (19651).

1429121 is an equidigital number, since it uses as much as digits as its factorization.

1429121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19650.

The product of its digits is 144, while the sum is 20.

The square root of 1429121 is about 1195.4584894508. The cubic root of 1429121 is about 112.6392284448.

The spelling of 1429121 in words is "one million, four hundred twenty-nine thousand, one hundred twenty-one".